That doesn't sound like an AF/KL/DL transfer since those take place inbetween 2D/E/F which isn't hot or overcrowded or poorly signed. Maybe you are referring to the old T1? Anyhow, I pass through both CDG and AMS over 30 times a year each. So that is my sample metric. The only time I had problems with passport control at CDG was at T1. Never at T2. But at AMS, at the internal transit point, coming or going, it is always bad. 100% of the time. Going from the street to the gates isn't usually too bad, except for holiday periods. But internal is terrible which is why KL put up these new business class queues. I'm glad to hear they work well when they are actually staffed.